2008–09 Országos Bajnokság I (men's water polo)
2008–09 Országos Bajnokság I was the 103rd water polo championship in Hungary.
First stage
Pld - Played; W - Won; L - Lost; G+ - Points for; G- - Points against; Diff - Difference; P - Points.Championship Playoff
Final
TEVA-VasasPlaket won the FINAL series 3–1.| 2008–09 OB I Winner |
| TEVA-VasasPlaket 16th Title |
European competition Playoff
Pld - Played; W - Won; L - Lost; G+ - Points for; G- - Points against; Diff - Difference; P - Points; BP - Bonus Points.
Relegation Playoff
Pld - Played; W - Won; L - Lost; G+ - Points for; G- - Points against; Diff - Difference; P - Points; Bp - Bonus Points.
Final standing
| Rank | Team |
| TEVA-VasasPlaket | |
| ZF-Eger | |
| Domino-Honvéd | |
| 4 | Ferencvárosi TC-Aprilia-Fisher Klíma |
| 5 | Szeged-Beton VE |
| 6 | Uniqa-Újpesti TE |
| 7 | Pécsi Vízmű-Pécsi VSK-Fűszért |
| 8 | BVSC-Atlantis Casino |
| 9 | OSC-Opus Via |
| 10 | Szolnoki Főiskola VSC-Közgép |
| 11 | Bodrogi Bau-Szentesi VK |
| 12 | Androbau-Fehérvár Póló SE |